The ______ determines the chemical and physical properties of an atom.
a. number of electrons
b. electrical charge
c. size of the valence electron shell
d. number of protons
e. size of the nucleus
d. number of protons
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Identify the products in the following chemical reaction. 2 KalSi3O8(s) + 11 H2O --> 2 K+(aq) + 2 OH-(aq) + 4 H4SiO4 (aq) + Al2Si2O5(OH)4(s)
A) potassium ion, hydroxyl ion, silicic acid, kaolinite B) kaolinite ion, hydronic ion, salicic acid, caolinite C) potassium feldspar, water D) potassium feldspar, basic ion, silicate, kaolinite
Which of the following sequence of responses could not occur as a result of flood basalts?
A. the altered atmosphere changes the heat balance of Earth via greenhouse effect B. globally, the climate would stay the same and not change C. the composition of the atmosphere would change D. concentrated volcanism would emit tremendous volumes of gases
While Kayla is driving along a busy highway just outside a major city, she suddenly comes to a standstill in traffic. For the first time ever, she notices that alongside the highway are stretches of forest and wetland. She hears the noise of frogs and insects and birds that she never would have noticed if not trapped in traffic. Why does Kayla never notice these natural wonders on her route?
A) light pollution B) thermal pollution C) noise pollution D) acid rain
In the seismograph shown above, what is the estimated time interval between points A and C?
A) 3 minutes B) 4 minutes C) 5 minutes D) 6 minutes